102607612260781 has 8 divisors (see below), whose sum is σ = 108643471626744. Its totient is φ = 96571765946880.

The previous prime is 102607612260773. The next prime is 102607612260809. The reversal of 102607612260781 is 187062216706201.

It can be written as a sum of positive squares in 4 ways, for example, as 1200194745156 + 101407417515625 = 1095534^2 + 10070125^2 .

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 102607612260781 - 2³ = 102607612260773 is a prime.

It is a super-2 number, since 2×102607612260781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102607612267781) 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, 16259521 + ... + 21669961.

It is an arithmetic number, because the mean of its divisors is an integer number (13580433953343).

Almost surely, 2^{102607612260781} is an apocalyptic number.

It is an amenable number.

102607612260781 is a deficient number, since it is larger than the sum of its proper divisors (6035859365963).

102607612260781 is a wasteful number, since it uses less digits than its factorization.

102607612260781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6526031.

The product of its (nonzero) digits is 677376, while the sum is 49.

Adding to 102607612260781 its reverse (187062216706201), we get a palindrome (289669828966982).

The spelling of 102607612260781 in words is "one hundred two trillion, six hundred seven billion, six hundred twelve million, two hundred sixty thousand, seven hundred eighty-one".