7280121475 has 48 divisors (see below), whose sum is σ = 9974361600. Its totient is φ = 5227200000.

The previous prime is 7280121461. The next prime is 7280121487. The reversal of 7280121475 is 5741210827.

It is not a de Polignac number, because 7280121475 - 2¹⁵ = 7280088707 is a prime.

It is a super-4 number, since 4×7280121475⁴ (a number of 41 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8263035 + ... + 8263915.

It is an arithmetic number, because the mean of its divisors is an integer number (207799200).

Almost surely, 2^7280121475 is an apocalyptic number.

7280121475 is a deficient number, since it is larger than the sum of its proper divisors (2694240125).

7280121475 is a wasteful number, since it uses less digits than its factorization.

7280121475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 7280121475 is about 85323.6278823164. The cubic root of 7280121475 is about 1938.1149964440.

The spelling of 7280121475 in words is "seven billion, two hundred eighty million, one hundred twenty-one thousand, four hundred seventy-five".