61987054597 has 8 divisors (see below), whose sum is σ = 67695505920. Its totient is φ = 56412919920.

The previous prime is 61987054561. The next prime is 61987054601. The reversal of 61987054597 is 79545078916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61987054597 - 2³⁵ = 27627316229 is a prime.

It is a super-2 number, since 2×61987054597² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61987054517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33578197 + ... + 33580042.

It is an arithmetic number, because the mean of its divisors is an integer number (8461938240).

Almost surely, 2^61987054597 is an apocalyptic number.

It is an amenable number.

61987054597 is a deficient number, since it is larger than the sum of its proper divisors (5708451323).

61987054597 is a wasteful number, since it uses less digits than its factorization.

61987054597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67158323.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 61987054597 in words is "sixty-one billion, nine hundred eighty-seven million, fifty-four thousand, five hundred ninety-seven".