70525783477 has 4 divisors (see below), whose sum is σ = 70528791820. Its totient is φ = 70522775136.

The previous prime is 70525783469. The next prime is 70525783481. The reversal of 70525783477 is 77438752507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77438752507 = 349 ⋅221887543.

It can be written as a sum of positive squares in 2 ways, for example, as 7644704356 + 62881079121 = 87434^2 + 250761^2 .

It is a cyclic number.

It is not a de Polignac number, because 70525783477 - 2³ = 70525783469 is a prime.

It is a super-2 number, since 2×70525783477² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70525786477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1468728 + ... + 1515985.

It is an arithmetic number, because the mean of its divisors is an integer number (17632197955).

Almost surely, 2^70525783477 is an apocalyptic number.

It is an amenable number.

70525783477 is a deficient number, since it is larger than the sum of its proper divisors (3008343).

70525783477 is a wasteful number, since it uses less digits than its factorization.

70525783477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3008342.

The product of its (nonzero) digits is 11524800, while the sum is 55.

The spelling of 70525783477 in words is "seventy billion, five hundred twenty-five million, seven hundred eighty-three thousand, four hundred seventy-seven".