61895581455 has 32 divisors (see below), whose sum is σ = 104627635200. Its totient is φ = 31194515072.

The previous prime is 61895581453. The next prime is 61895581457. The reversal of 61895581455 is 55418559816.

It is an interprime number because it is at equal distance from previous prime (61895581453) and next prime (61895581457).

It is a cyclic number.

It is not a de Polignac number, because 61895581455 - 2¹ = 61895581453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61895581395 and 61895581404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61895581453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1493265 + ... + 1534154.

It is an arithmetic number, because the mean of its divisors is an integer number (3269613600).

Almost surely, 2^61895581455 is an apocalyptic number.

61895581455 is a deficient number, since it is larger than the sum of its proper divisors (42732053745).

61895581455 is a wasteful number, since it uses less digits than its factorization.

61895581455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027503.

The product of its digits is 8640000, while the sum is 57.

The spelling of 61895581455 in words is "sixty-one billion, eight hundred ninety-five million, five hundred eighty-one thousand, four hundred fifty-five".