253987924890 has 64 divisors (see below), whose sum is σ = 737632168704. Its totient is φ = 54639418368.

The previous prime is 253987924871. The next prime is 253987924909. The reversal of 253987924890 is 98429789352.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (253987924871) and next prime (253987924909).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35568969 + ... + 35576108.

It is an arithmetic number, because the mean of its divisors is an integer number (11525502636).

Almost surely, 2^253987924890 is an apocalyptic number.

253987924890 is an abundant number, since it is smaller than the sum of its proper divisors (483644243814).

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

253987924890 is a wasteful number, since it uses less digits than its factorization.

253987924890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71145111.

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 253987924890 in words is "two hundred fifty-three billion, nine hundred eighty-seven million, nine hundred twenty-four thousand, eight hundred ninety".