601213406978 has 4 divisors (see below), whose sum is σ = 901820110470. Its totient is φ = 300606703488.

The previous prime is 601213406957. The next prime is 601213407097. The reversal of 601213406978 is 879604312106.

601213406978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 535936733929 + 65276673049 = 732077^2 + 255493^2 .

It is a super-2 number, since 2×601213406978² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150303351743 + ... + 150303351746.

Almost surely, 2^601213406978 is an apocalyptic number.

601213406978 is a deficient number, since it is larger than the sum of its proper divisors (300606703492).

601213406978 is a wasteful number, since it uses less digits than its factorization.

601213406978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300606703491.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 601213406978 in words is "six hundred one billion, two hundred thirteen million, four hundred six thousand, nine hundred seventy-eight".