102061557461 has 8 divisors (see below), whose sum is σ = 107453173920. Its totient is φ = 96671936592.

The previous prime is 102061557449. The next prime is 102061557467. The reversal of 102061557461 is 164755160201.

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 102061557461 - 2⁶ = 102061557397 is a prime.

It is a super-2 number, since 2×102061557461² (a number of 23 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 (102061557467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393335 + ... + 599028.

It is an arithmetic number, because the mean of its divisors is an integer number (13431646740).

Almost surely, 2^102061557461 is an apocalyptic number.

It is an amenable number.

102061557461 is a deficient number, since it is larger than the sum of its proper divisors (5391616459).

102061557461 is an equidigital number, since it uses as much as digits as its factorization.

102061557461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997795.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 102061557461 in words is "one hundred two billion, sixty-one million, five hundred fifty-seven thousand, four hundred sixty-one".