615022661040 has 40 divisors (see below), whose sum is σ = 1906570249968. Its totient is φ = 164006042880.

The previous prime is 615022661027. The next prime is 615022661087. The reversal of 615022661040 is 40166220516.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 615022660992 and 615022661010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281296971 + ... + 1281297450.

Almost surely, 2^615022661040 is an apocalyptic number.

615022661040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

615022661040 is an abundant number, since it is smaller than the sum of its proper divisors (1291547588928).

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

615022661040 is a wasteful number, since it uses less digits than its factorization.

615022661040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2562594437 (or 2562594431 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 615022661040 its reverse (40166220516), we get a palindrome (655188881556).

The spelling of 615022661040 in words is "six hundred fifteen billion, twenty-two million, six hundred sixty-one thousand, forty".