61536455154 has 24 divisors (see below), whose sum is σ = 133402194432. Its totient is φ = 20500888920.

The previous prime is 61536455153. The next prime is 61536455161. The reversal of 61536455154 is 45155463516.

61536455154 is a `hidden beast` number, since 6 + 15 + 36 + 4 + 551 + 54 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61536455153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 904842 + ... + 970469.

It is an arithmetic number, because the mean of its divisors is an integer number (5558424768).

Almost surely, 2^61536455154 is an apocalyptic number.

61536455154 is an abundant number, since it is smaller than the sum of its proper divisors (71865739278).

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

61536455154 is a wasteful number, since it uses less digits than its factorization.

61536455154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877142 (or 1877139 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 45.

The spelling of 61536455154 in words is "sixty-one billion, five hundred thirty-six million, four hundred fifty-five thousand, one hundred fifty-four".