1155401535540 has 96 divisors (see below), whose sum is σ = 3824777537280. Its totient is φ = 254985163776.

The previous prime is 1155401535521. The next prime is 1155401535551. The reversal of 1155401535540 is 455351045511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47418097 + ... + 47442456.

It is an arithmetic number, because the mean of its divisors is an integer number (39841432680).

Almost surely, 2^{1155401535540} is an apocalyptic number.

1155401535540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155401535540 is an abundant number, since it is smaller than the sum of its proper divisors (2669376001740).

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

1155401535540 is a wasteful number, since it uses less digits than its factorization.

1155401535540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94860601 (or 94860599 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 39.

The spelling of 1155401535540 in words is "one trillion, one hundred fifty-five billion, four hundred one million, five hundred thirty-five thousand, five hundred forty".