642613030526 has 32 divisors (see below), whose sum is σ = 988365742848. Its totient is φ = 313189208640.

The previous prime is 642613030523. The next prime is 642613030529. The reversal of 642613030526 is 625030316246.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (642613030523) and next prime (642613030529).

It is a self number, because there is not a number n which added to its sum of digits gives 642613030526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642613030523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116687465 + ... + 116692971.

It is an arithmetic number, because the mean of its divisors is an integer number (30886429464).

Almost surely, 2^642613030526 is an apocalyptic number.

642613030526 is a deficient number, since it is larger than the sum of its proper divisors (345752712322).

642613030526 is a wasteful number, since it uses less digits than its factorization.

642613030526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096.

The product of its (nonzero) digits is 155520, while the sum is 38.

The spelling of 642613030526 in words is "six hundred forty-two billion, six hundred thirteen million, thirty thousand, five hundred twenty-six".