1151061531620 has 864 divisors, whose sum is σ = 3543453091584. Its totient is φ = 306171740160.

The previous prime is 1151061531617. The next prime is 1151061531643. The reversal of 1151061531620 is 261351601511.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3260797364 + ... + 3260797716.

It is an arithmetic number, because the mean of its divisors is an integer number (4101218856).

Almost surely, 2^{1151061531620} is an apocalyptic number.

1151061531620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151061531620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771726545792).

1151061531620 is an abundant number, since it is smaller than the sum of its proper divisors (2392391559964).

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

1151061531620 is a wasteful number, since it uses less digits than its factorization.

1151061531620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 1151061531620 in words is "one trillion, one hundred fifty-one billion, sixty-one million, five hundred thirty-one thousand, six hundred twenty".