1153421057620 has 48 divisors (see below), whose sum is σ = 2609093965968. Its totient is φ = 425782563840.

The previous prime is 1153421057599. The next prime is 1153421057629. The reversal of 1153421057620 is 267501243511.

It can be written as a sum of positive squares in 8 ways, for example, as 134540772804 + 1018880284816 = 366798^2 + 1009396^2 .

It is a super-2 number, since 2×1153421057620² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1153421057620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153421057629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661150 + ... + 1656490.

It is an arithmetic number, because the mean of its divisors is an integer number (54356124291).

Almost surely, 2^{1153421057620} is an apocalyptic number.

1153421057620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153421057620 is an abundant number, since it is smaller than the sum of its proper divisors (1455672908348).

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

1153421057620 is a wasteful number, since it uses less digits than its factorization.

1153421057620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999820 (or 999818 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 1153421057620 in words is "one trillion, one hundred fifty-three billion, four hundred twenty-one million, fifty-seven thousand, six hundred twenty".