616610501040 has 80 divisors (see below), whose sum is σ = 1911833134848. Its totient is φ = 164400169728.

The previous prime is 616610501029. The next prime is 616610501051. The reversal of 616610501040 is 40105016616.

It is an interprime number because it is at equal distance from previous prime (616610501029) and next prime (616610501051).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 616610500989 and 616610501007.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137877 + ... + 1589963.

Almost surely, 2^616610501040 is an apocalyptic number.

616610501040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

616610501040 is an abundant number, since it is smaller than the sum of its proper divisors (1295222633808).

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

616610501040 is a wasteful number, since it uses less digits than its factorization.

616610501040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457786 (or 457780 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 616610501040 its reverse (40105016616), we get a palindrome (656715517656).

The spelling of 616610501040 in words is "six hundred sixteen billion, six hundred ten million, five hundred one thousand, forty".