70778335042 has 4 divisors (see below), whose sum is σ = 106167502566. Its totient is φ = 35389167520.

The previous prime is 70778335037. The next prime is 70778335057. The reversal of 70778335042 is 24053387707.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63948800161 + 6829534881 = 252881^2 + 82641^2 .

It is a super-2 number, since 2×70778335042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70778334983 and 70778335001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17694583759 + ... + 17694583762.

Almost surely, 2^70778335042 is an apocalyptic number.

70778335042 is a deficient number, since it is larger than the sum of its proper divisors (35389167524).

70778335042 is a wasteful number, since it uses less digits than its factorization.

70778335042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35389167523.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 70778335042 in words is "seventy billion, seven hundred seventy-eight million, three hundred thirty-five thousand, forty-two".