245919909972 has 48 divisors (see below), whose sum is σ = 626173377984. Its totient is φ = 74497920000.

The previous prime is 245919909959. The next prime is 245919909973. The reversal of 245919909972 is 279909919542.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245919909973) 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, 135972 + ... + 714372.

It is an arithmetic number, because the mean of its divisors is an integer number (13045278708).

Almost surely, 2^245919909972 is an apocalyptic number.

245919909972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

245919909972 is an abundant number, since it is smaller than the sum of its proper divisors (380253468012).

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

245919909972 is a wasteful number, since it uses less digits than its factorization.

245919909972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581640 (or 581638 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 66.

The spelling of 245919909972 in words is "two hundred forty-five billion, nine hundred nineteen million, nine hundred nine thousand, nine hundred seventy-two".