245915657690 has 16 divisors (see below), whose sum is σ = 442666598400. Its totient is φ = 98362170960.

The previous prime is 245915657683. The next prime is 245915657693. The reversal of 245915657690 is 96756519542.

It is a happy number.

It is a super-2 number, since 2×245915657690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245915657693) 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, 252890 + ... + 745509.

It is an arithmetic number, because the mean of its divisors is an integer number (27666662400).

Almost surely, 2^245915657690 is an apocalyptic number.

245915657690 is a deficient number, since it is larger than the sum of its proper divisors (196750940710).

245915657690 is a wasteful number, since it uses less digits than its factorization.

245915657690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023037.

The product of its (nonzero) digits is 20412000, while the sum is 59.

The spelling of 245915657690 in words is "two hundred forty-five billion, nine hundred fifteen million, six hundred fifty-seven thousand, six hundred ninety".