1523451321140 has 96 divisors (see below), whose sum is σ = 3761689876224. Its totient is φ = 507481666560.

The previous prime is 1523451321137. The next prime is 1523451321143. The reversal of 1523451321140 is 411231543251.

It is an interprime number because it is at equal distance from previous prime (1523451321137) and next prime (1523451321143).

It is a super-2 number, since 2×1523451321140² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1523451321097 and 1523451321106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523451321143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427691 + ... + 1797170.

It is an arithmetic number, because the mean of its divisors is an integer number (39184269544).

Almost surely, 2^{1523451321140} is an apocalyptic number.

1523451321140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1523451321140 is an abundant number, since it is smaller than the sum of its proper divisors (2238238555084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1523451321140 is a wasteful number, since it uses less digits than its factorization.

1523451321140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225017 (or 2225015 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 1523451321140 its reverse (411231543251), we get a palindrome (1934682864391).

The spelling of 1523451321140 in words is "one trillion, five hundred twenty-three billion, four hundred fifty-one million, three hundred twenty-one thousand, one hundred forty".